/*
Copyright (c) 2010, Jonathan Baldwin
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
  list of conditions and the following disclaimer in the documentation and/or
  other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Based on the Libavformat API example by Fabrice Bellard

* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#include "RecapUtil.h"

extern "C"
{
#include "libavformat/avformat.h"
#include "libswscale/swscale.h"
}

#undef exit

struct AVEncoder
{
    AVOutputFormat *m_fmt;
    AVFormatContext *m_oc;
    /**************************************************************/
    /* video output */
    bool    m_enable_video;
    int     m_width, m_height;
    CodecID m_video_codecid;
    int     m_framerate;
    PixelFormat m_in_pixfmt, m_out_pixfmt;
    int     m_sws_flags;

    //const char *m_in_picture_buffer;
    AVFrame *m_in_picture, *m_out_picture;
    bool m_in_picture_setbyuser;
    uint8_t *m_video_outbuf;
    int m_frame_count, m_video_outbuf_size;
    AVStream *m_video_st;

    /**************************************************************/
    /* audio output */

    bool m_enable_audio;
    int m_audio_samplerate;
    SampleFormat m_audio_sampleformat;
    short int m_audio_channels;
    CodecID m_audio_codecid;
    int16_t *m_samples;
    bool     m_samples_setbyuser;
    uint8_t *m_audio_outbuf;
    int m_audio_frame_bytes;
    int m_audio_outbuf_size;
    int m_audio_input_frame_size;
    AVStream *m_audio_st;

    AVEncoder();
    void writeAudioFrame();
    void writeVideoFrame();
    void open(const char *filename);
    void close();

protected:
    
    AVStream *add_audio_stream(enum CodecID codec_id);
    void open_audio(AVStream *st);
    void close_audio(AVStream *st);
    
    /* add a video output stream */
    AVStream *add_video_stream(enum CodecID codec_id);
    AVFrame *alloc_picture(enum PixelFormat pix_fmt, int width, int height);
    void open_video(AVStream *st);
    void write_delayed_video_frames(AVStream *st);
    void close_video(AVStream *st);

};
